Pet wheelchair



FIG. 1 is a top perspective view of a pet wheelchair incorporating the claimed design;

FIG. 2 is a left side plan view thereof, the right side being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top elevational view thereof.

Elements in broken line are not claimed. 

The ornamental design for a pet wheelchair, as is shown and described herein. 